Post by: kennym on April 01, 2024, 10:22:39 AM
Decent cost but wonder if it be brittle . I did the fatarse test with blocks on floor spaced 36” and broke a 1”x1.75 “
Also broke a piece of black locust same way same size...
Post by: kennym on April 01, 2024, 11:26:29 AM
It’s got a nice color and reasonable price
Post by: kennym on April 01, 2024, 03:29:22 PM
Post by: 4 point on April 01, 2024, 04:06:11 PM
Post by: 4 point on April 01, 2024, 04:07:17 PM
Post by: kennym on April 01, 2024, 04:43:10 PM
I just wondered if it was too brittle for a riser but I guess amberboo is heated too
Post by: kennym on April 01, 2024, 04:43:51 PM
Post by: Mad Max on April 01, 2024, 07:40:05 PM
Anybody heat treated an ash selfbow to add lbs?
Yes Ash selfbow needs heat treating
Slow and deep
(https://i.imgur.com/dw2Vo4U.jpg)
(https://i.imgur.com/hVab9Ii.jpg)
Post by: simk on April 02, 2024, 04:23:36 AM
there is lots of different heat treated lumber out there. Everybody is cooking its own recipe for the process. the goal of the process in most cases is making the wood more durable and resistant against decay and mold. Very low moisture is one effect. Mechanical properties are not improved for our needs; on the contrary it gets brittle in most cases and compression ability decreases. Made a few experimemts myself.
If this is your goal, you can improve mechanical properties some if you adapt the process and use less heat than they do. Its delicate however.
jm2c
Post by: kennym on April 02, 2024, 10:17:15 AM
I have done some testing and it is waaaay too brittle to use in a bow IMO . Lams snap easily compared to maple.
I was mainly looking at a more cost effective option for risers. I don't think I'd trust it.
I do like the color but the smell when milling it is not nice either...
Post by: Kirkll on April 02, 2024, 10:39:38 AM
I think just heat treated . They do poplar too .
I just wondered if it was too brittle for a riser but I guess amberboo is heated too
Heat treated bamboo vs natural bamboo definitely increases the deflection and compression strength, and is preferable in bow laminations. But the flexible nature of the bamboo itself is till there.
But heat treating Ash and poplar is definitely going to make it brittle. It may work just fine for a riser if it can hold up to the shock. They didn’t have any technical specs on elasticity, or hardness, or mass weight density that I found.
I’d say give it a test run on a 65# bow and dry fire it a couple times. That will tell the tale right there…. Kirk
Post by: kennym on April 02, 2024, 11:34:44 AM
I think just heat treated . They do poplar too .
I just wondered if it was too brittle for a riser but I guess amberboo is heated too
Heat treated bamboo vs natural bamboo definitely increases the deflection and compression strength, and is preferable in bow laminations. But the flexible nature of the bamboo itself is till there.
But heat treating Ash and poplar is definitely going to make it brittle. It may work just fine for a riser if it can hold up to the shock. They didn’t have any technical specs on elasticity, or hardness, or mass weight density that I found.
I’d say give it a test run on a 65# bow and dry fire it a couple times. That will tell the tale right there…. Kirk
I'd thought of that Kirk,but hate to waste good materials. LOL
Post by: Kirkll on April 02, 2024, 08:32:26 PM
For guys building one piece bows wrapped in glass with no wild riser shape. It will probably work great. But I don’t think I’d try a wild shaped ILF riser cut way past center with the stuff…. Just saying…
Post by: Appalachian Hillbilly on April 18, 2024, 10:26:25 AM
The place I get it from carries torrifed ash, maple and poplar.
It is all very brittle...as kennym has said.
I might would use it as accents in a riser that has been strengthened .
Post by: Mad Max on April 18, 2024, 04:06:31 PM
I have been using some torrifed maple and it is too brittle. Gorgeous for furniture and other stuff.
The place I get it from carries torrifed ash, maple and poplar.
It is all very brittle...as kennym has said.
I might would use it as accents in a riser that has been strengthened .
Where have you been?
The Classic is in 2 weeks :saywhat: